Nebula Public Library

The knowledge bank of ESA’s R&D programmes

End to End Dissemination Tool

Programme
TDE
Programme Reference
T606-404ET
Prime Contractor
GMV AEROSPACE AND DEFENCE, SA
Start Date
End Date
Status
Closed
Country
Spain
End to End Dissemination Tool
Objectives

The objective of this activity is to develop an end-to-end data dissemination simulation tool to help in the detailed characterisation of the mechanisms for the control and mission data dissemination within a Galileo architecture incorporating inter-satellite links.

Description

The incorporation of inter-satellite-links to the Galileo architecture is under detailed assessment by the GNSS Evolution Program, given its visible potential to:- Enhance the overall constellation command-ability- Enhance the overall constellation monitoring-ability- Simplify the Ground Segment, reducing the number of remote ground stations- Enhance the navigation message accuracy- Enhance constellation autonomyThe incorporation of inter-satellite-links to Galileo imply an important evolution of its functional and physical architecture. It enables an alternative and/or complementary mechanism for the control and mission data dissemination within the System; which detailed and complete characterization requires of sophisticated end-to-end simulation tools. The activity high level tasks are as follows:- Consolidation of the tool specification; namely functional, performance and external interfaces requirements (initial specification prepared by ESA). - Definition of the tool physical architecture; namely main physical blocks, related internal interfaces, and core algorithms.- Definition of the tool physical detailed design; namely software modules, detailed algorithms, detailed internal and external interfaces.- Development and verification of the tool.- Consolidation of the definition of the operational scenarios to be analysed (initial definition prepared by ESA).- Extensive analysis of the control and mission data dissemination (e.g. in terms of throughput, latency, PER, BER, etc.), under the above operational scenarios; which shall include at least: i) Nominal G2G FOC operational scenarios. ii) Nominal G2G IOC to G2G FOC operational scenarios iii) Preventive and corrective maintenance (at ground or/and space segment) iv) Contingencies (at ground or/and space segment)The final result of the activity shall be a tool to assist in the design of INter Satellite links for the Next Generation of GNSS.

Application Domain
Navigation
Technology Domain
6 - RF Subsystems, Payloads and Technologies
Competence Domain
5-Radiofrequency & Optical Systems and Products
Keywords
0-Navigation Technologies
Initial TRL
TRL 2
Target TRL
TRL 3